Cloth-cutting machine.



F. 1. CLARK.

Y CLOTH CUTTING MACHINE. APPLICATION man DEC. 14. 1916. 1,271,279. Patented July 2,1918.

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F. 1. CLARK.

CLOTH CUTTING MACHINE. AvPucATldn HLED mac. \4. 19,16. 1,271,279. Patented July 2,1918. 2 SHEETS-SHEET 2.

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' 1 STATES PATENT onnron I FREDERICK J. CLARK, OF BUFFALO, NEW YORK, ASSIGNOIR, TO EASTMAN MACHINE 0F BUFFALO, NEW YORK. Y

. CLOTH-CUTTING MACHINE.

' Specification of Letters latent;

Patented July 2, 1918.

Application filed December 14, 1916. Serial No. 137,044.

.York, have invented a new and useful Improvement in Cloth-Cutting Machines, of which the following is a specification. I

This invention relates to portable cloth cuttin machines of the kind that are moved about y hand on a cutting table and have a base or base plate on which the knife and its driving motor are mounted and which rests and is adapted to move on the tablebeneath a lay ofcloth or other material to be cut. The cloth or material bears on and moves over the upper surface of the base past the knife in the use of the machine. Some'kinds of material, such for example as friction fabric and insulating fabric, do not slide freely over'the base on account of the nature of their surfaces, but cling to the surface of the base and thus materiall hinder the: easy and proper operation of t e machine.

Oneof the objects of this invention is to overcome this difficulty by providing the base of the machine with rotatable rollers arranged so as to form rolling supports for the material which facilitate the movement of the material over the base and thus reduce the efiort necessary to shove the machine along. Another object of the invention is to provide improved securing means for the roller supports for'the base. K

In the accompanying drawings in which two different embodiments of the invention are shown Figure 1 is a erspective view on a reduced scale of a dloth cutting machine having one form of base embodying the invention. y

Fig.2 is a fragmentary plan view of the rear end of the machine base.

Fig. 3 is a bottom plan view of the base.

Fig. 4 is a perspective view detached of one of the securing plates for the supportrollers. v 7

ig. 5 is a longitudinal sectional elevation of the base on line 5-5, Fig. 3.

' Fig. 6 is an enlarged transverse sectional elevation thereof on line 6-6, Fig.3.

Fig. 7 is a fragmentary bottom plan view thereof showing one pair of supporting rollers disconnected. I f

Fig. 8 is a bottom plan view on a reduced s al f a base of modified construction.

An electric cloth cutting machinehaving a reciprocating knife 9 is illustrated in the drawings. provements in the base, hereinafter described, the machine may be of any usual or suitable construction.

In the construction shown in Figs. 1-7,

the base comprises a main central plate 10 to which the motor'supporting standard 11 is secured, and a surrounding edge plate 12 which slopes downwardly from the edges of the central plate 10 and has a thin outer edge adapting it to readily pass under the material. The centralplate is supported on yieldingly mounted wheels or rollers 13 to reduce the vibration and is thus adapted to move up and down relative to the edge plate so that the latter can lie stationary flat upon the table.

, Suitable springs 14 connecting the edge plate and the central plate press the former lightly down upon the table. This is a well known construction of base.

15 and 16 represent rotatably mounted preferably arranged at the front and rear edges of the central plate 10 and extend su stantially from 'side to side thereof in openirigsl'? of the base and project slightly above the top surfaces of the base plates 10 and 12, so as to hold the material from contact withv the base plates in the vicinity of the rollers. The rollers are preferably journaled in bearing pieces 18 which are secured to the underside of the central plate 10 and project into the openings provided therefor 1 in the edge plate 12. The rollers rest loosely and are adapted to turn in seats 19 in the bearing pieces which are suitably shaped to prevent the displacement of" the rollers, the open sides of the bearingl'seats being for instance, narrower than t e diameter of the parts of the rollers seated therein so that the rollers cannot be lifted out of the'seats.

The base shown in Fig. 8 does not have a surroundin g edge plate as above described,

but has instead a movable lifting or edge plate 20 With a sloping upper surface and thin edge located at the front end only of a main base plate 21, which has beveled or downwardly sloping side and. rai S With the exception of the im rollers extending transversely of the base in portion of the upper surface of this plate.

The rollers can be journaled, asbefore explained, 111 seats 1n bearing p1eces 24t, 25 secured to the underside of the mam base plate.

In ;both constructions the rollers act in the same way to hold the material but of contact with the adjacent portions of the surface of the base and form rolling supports for the material. V

The supporting rollers or wheels 13 for lthe-zmach-ine are arranged as usual in pairs journaled in any suitable way on the gopporsitewendsrof flat springs or spring strips 126 which extend lengthwise under the base at therside portions-thereof and are attached between their ends to the underside of the main base plate.

Each of these springs 26 is preferably securedtbetween its ends in a seat or recess -27 in a downwardlyprojecting lug or thicknened ,part -28 of the main baseplat'e this lug or part having a lip 29 which extends inwardly under one edge ofthe spring, see Figs. 8 and 6. A plate :30 vfastened to the underside of the basesplate'by a screw 31 or otherwise and extendingunder :the opposite edge of the spring cooperates with 5th8 lip 29 in retaining the spring'inathe seat 27.

The seat 27 :is made enough wider than the spring to permit the latter toi'befmoved laterally in the seat to disengage it tfrornth'e lip, and'in order to :preventsuch movement and hold the spring in engagement with the "lip,*tl1e plate 30 i provided with one or more tongues or projections 32 which extend "upw'ardly between the sidefof the seat and the adjacent edge of vthe spring. The springcan be readily disengaged from thelip and detached when fth'e plate '30 is removed. By means of this construction the wheel carrying-spring is securely fastened in place with a single screw. The main base plate is of course recessed or shaped to 'provideroom over the wheels "13 to allow the wheelsto yield upwardly.

- Since *the' base isthus provided on its underside with supporting rollers or wheels adapted-to roll on'the-j table and on its upper side'withToll-ers in and 16 adapted to roll against the underside of the overlying material', 'the'machine can be easily operated for cutting a heavy lay of material "which would not slid-e "freely over the ordinary basef v I Harm as my invention Y 1. Ap'ortable cloth cutting machine haw ing a base adapted to rest and move on a supporting surface beneath the material being cut and provided with rollers arranged to contact with the under side of the material and form rolling supports therefor to "reduce friction between said base and said material.

2. EX-portable cloth cutting machine havinga lease adapted to rest and move on a supporting surface beneath the material be ing cut and provided with transversely extending rollers rotatably mounted at-hBl-TBOH in "front and in rear of the knife and arranged \tO contact with the under side of the material and form rolling supports therefor to reduce the friction between said base and said material.

3. A cloth cutting machine having :a base adapted to move beneath the -material 'be ing cut and 'h a-ving rollers on its :under and upper sides, the rollers 'on {said under side being'arranged to :roll on a supporting surface, said rollers on said upper ide ;being arranged to contact with theunderside of the :material to {reduce the friction between the material :to reduce the friction fibetween said base ,and said material.

55. Aportable cloth cutting machine having a base adapted rto rest-and move on a supporting surface "beneath the =fmateri-al being cut and comprising a main :base plate and a movable :ed'geplate, ;--and transversely extending rollers rotatably "mounted on said main base plate and arranged tocontaet with the under sideofrthematerialandform rolling supportstherefor to reduce the fric- 'tion between said base :and said material.

6. A cloth cutting machine having adoa'se adapted to :rest and'move on a supporting surface beneath the material beingcut and comprising a main :base plate and a movable edge plate surrounding the main base plate, I and "transversely extending rollers rotatably mounted on said main base fplate at the front and rear edges thereof land ar;

ranged to contact=with the1underside of the material ito form rolling supports *therefor to reduce the friction between said base and said onaterial.

:7 9A aportab'le zcloth cutting machine having a base adapted to rest and :move ona supporting surface beneath-the Emat-er-ial beingicut, transverse rollers supported 5 by said base out of contact with said supporting surface and extending across a substantial portion of the width of said base and arranged to contact with the under surface of the material being cut and to be revolved by such contact with the material in the direction of movement of the material relative to the base toform rolling supports for the material.

8. A-cloth cutting machine having a base adapted to move beneath the material being cut, supporting rollers for said base, spring strips on which said rollers are journaled, said base having a recessed seat for each of FREDERICK; CLARK.

Witnesses MIRIAM SIXBY, g

WADE STEVENSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

